Ok so I've had really bad cramping all day (closer to labour pain then period) a few days ago I started having brown blood and black which later came out in chunks and charcoal sort of texture , this evening I put a tampon in just incase and a red blob came out with lots of white tissue in it . I have been on the depo (contraceptive) injection and I missed my last period but this I wouldn't call a period atall it is extremely painful and the only other time I have had blood like this is with a previous suspected early miscarriage . Sorry for the graphic image and also it looks a little unclear as I was fiddling with it abit trying to inspect thoroughly I also dropped a fairly large quantity down the toilet and couldn't retrieve it . -- I've never had a blood clot like this or blood clots apart from after birth . All advice appreciated .